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Employee Stock and Savings Plans - Additional Information (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Billions
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Compensation Related Costs Disclosure [Line Items]      
Retirement benefits for saving plans funded by employer $ 1.6 $ 1.4 $ 1.2
Stock Awards      
Compensation Related Costs Disclosure [Line Items]      
Unrecognized compensation costs $ 18.6    
Unrecognized compensation costs are expected to be recognized over a weighted average period (years) 3 years    
Weighted average grant-date fair value $ 252.59 [1] $ 291.22 $ 221.13
Fair value of awards vested $ 11.9 $ 14.1 $ 13.4
Shares authorized for future grant 164    
Stock Awards | Lower Limit      
Compensation Related Costs Disclosure [Line Items]      
Award vest period 4 years    
Stock Awards | Upper Limit      
Compensation Related Costs Disclosure [Line Items]      
Award vest period 5 years    
Restricted Stock Units | Executive Incentive Plan      
Compensation Related Costs Disclosure [Line Items]      
Award vest period 4 years    
Performance Stock Units | Executive Incentive Plan      
Compensation Related Costs Disclosure [Line Items]      
Award vest period 3 years    
Employee Stock      
Compensation Related Costs Disclosure [Line Items]      
Shares authorized for future grant 74    
Percentage of market value at which employees are able to purchase shares of common stock 90.00% 90.00% 90.00%
Maximum percentage of gross compensation at which employees may purchase shares 15.00% 15.00% 15.00%
[1] Includes 1 million, 1 million, and 2 million of PSUs granted at target and performance adjustments above target levels for fiscal years 2023, 2022, and 2021, respectively.